University Park, Iowa has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.4 °C (low) to 15.6 °C (high). Annual precipitation averages 950.7 Millimeters. University Park is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.4 °C | -0.9 °C | 29.21 mm |
| February | -8.4 °C | 1.7 °C | 40.13 mm |
| March | -2.5 °C | 9 °C | 53.34 mm |
| April | 3.9 °C | 16.3 °C | 96.27 mm |
| May | 10.7 °C | 22 °C | 128.27 mm |
| June | 16.4 °C | 27.5 °C | 130.05 mm |
| July | 18.1 °C | 29.6 °C | 108.2 mm |
| August | 16.9 °C | 28.3 °C | 111.25 mm |
| September | 11.9 °C | 24.7 °C | 91.44 mm |
| October | 5.1 °C | 17.9 °C | 68.58 mm |
| November | -1.4 °C | 9 °C | 56.9 mm |
| December | -7.2 °C | 2.1 °C | 37.08 mm |
| Annual | 4.4 °C | 15.6 °C | 950.72 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |